(New)11.04 - atheros AR2427 - wireless causing computer to freeze

**marcux** · September 18th, 2011

Hi all!
I have a problem with my wireless card, the computer freezes when I enter password
for network.
I use 11.04 and chipset is atheros AR2427.
I followed the instructions in thread:
http://ubuntuforums.org/showthread.php?t=1745354
No success and I followed the instructions in thread:
http://ubuntuforums.org/showthread.p...4#post10750214
No success there either.
So how do I fix this problem as I do not seem to be able to fix it with the help from these threads?

Many thanks in advance!

Marcux

**praseodym** · September 18th, 2011

Hi,

please show the outputs of the following terminal commands:

Code:

uname -a
lspci -nnk | grep -iA2 net
lsmod
iwconfig
rfkill list
sudo iwlist scan
dmesg | grep ath

**hofik** · September 20th, 2011

Hi, I have exactly the same issue with Notebook Acer 5250; Wifi Atheros AR5B95

**marcux** · September 24th, 2011

Output on the commands:

Code:

uname -a
Linux joel-Linux 3.1.0-999-generic #201108310919 SMP Wed Aug 31 10:33:14 UTC 2011 i686 i686 i386 GNU/Linux

lspci -nnk | grep -iA2 net
01:00.0 Ethernet controller [0200]: Atheros Communications AR8132 Fast Ethernet [1969:1062] (rev c0)
    Subsystem: ASUSTeK Computer Inc. Device [1043:838a]
    Kernel driver in use: atl1c
--
02:00.0 Network controller [0280]: Atheros Communications Inc. AR2427 Wireless Network Adapter (PCI-Express) [168c:002c] (rev 01)
    Subsystem: AzureWave Device [1a3b:1112]
    Kernel driver in use: ath9k

lsmod
Module                  Size  Used by
binfmt_misc            17374  1 
parport_pc             32578  0 
ppdev                  12869  0 
snd_hda_codec_realtek   241404  1 
snd_hda_intel          33132  2 
snd_hda_codec          94835  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              13413  1 snd_hda_codec
snd_pcm                81526  2 snd_hda_intel,snd_hda_codec
snd_seq_midi           13170  0 
snd_rawmidi            25273  1 snd_seq_midi
snd_seq_midi_event     14475  1 snd_seq_midi
arc4                   12473  2 
snd_seq                51702  2 snd_seq_midi,snd_seq_midi_event
snd_timer              29140  2 snd_pcm,snd_seq
snd_seq_device         14160  3 snd_seq_midi,snd_rawmidi,snd_seq
joydev                 17679  0 
ath9k                 113908  0 
mac80211              278060  1 ath9k
ath9k_common           13587  1 ath9k
snd                    56294  13 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
eeepc_wmi              12791  0 
asus_wmi               24173  1 eeepc_wmi
sparse_keymap          13747  1 asus_wmi
soundcore              12600  1 snd
ath9k_hw              330396  2 ath9k,ath9k_common
uvcvideo               67660  0 
ath                    19684  2 ath9k,ath9k_hw
i915                  541906  3 
cfg80211              173666  3 ath9k,mac80211,ath
drm_kms_helper         37515  1 i915
snd_page_alloc         14108  2 snd_hda_intel,snd_pcm
drm                   193954  4 i915,drm_kms_helper
wmi                    18749  1 asus_wmi
psmouse                70013  0 
i2c_algo_bit           13204  1 i915
videodev               98802  1 uvcvideo
video                  19411  1 i915
serio_raw              13094  0 
lp                     13412  0 
parport                41188  3 parport_pc,ppdev,lp
ahci                   21758  2 
libahci                26296  1 ahci
atl1c                  37010  0 

iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wlan0     IEEE 802.11bg  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=14 dBm   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

rfkill list
0: asus-wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

sudo iwlist scan
[sudo] password for joel: 
lo        Interface doesn't support scanning.

eth0      Interface doesn't support scanning.

wlan0     Scan completed :
          Cell 01 - Address: 00:14:6C:91:54:D2
                    Channel:6
                    Frequency:2.437 GHz (Channel 6)
                    Quality=33/70  Signal level=-77 dBm  
                    Encryption key:on
                    ESSID:"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
                              12 Mb/s; 24 Mb/s; 36 Mb/s
                    Bit Rates:9 Mb/s; 18 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000ed1a37c181
                    Extra: Last beacon: 336ms ago
                    IE: Unknown: 000C000000000000000000000000
                    IE: Unknown: 010882848B960C183048
                    IE: Unknown: 030106
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0100
                    IE: Unknown: 32041224606C
                    IE: Unknown: DD0900037F0101001DFF7F
                    IE: Unknown: DD0C00037F020101000002A34000
                    IE: Unknown: DD1A00037F030100000000146C9154D202146C9154D264002C011D08
          Cell 02 - Address: 00:26:5A:A9:9A:A0
                    Channel:1
                    Frequency:2.412 GHz (Channel 1)
                    Quality=18/70  Signal level=-92 dBm  
                    Encryption key:on
                    ESSID:"Swede"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 9 Mb/s
                              18 Mb/s; 36 Mb/s; 54 Mb/s
                    Bit Rates:6 Mb/s; 12 Mb/s; 24 Mb/s; 48 Mb/s
                    Mode:Master
                    Extra:tsf=00000038fe658680
                    Extra: Last beacon: 992ms ago
                    IE: Unknown: 00055377656465
                    IE: Unknown: 010882848B961224486C
                    IE: Unknown: 030101
                    IE: Unknown: 2A0100
                    IE: Unknown: 32040C183060
                    IE: Unknown: 2D1AEE1117FFFF0000010000000000000000000000000C0000000000
                    IE: Unknown: 3D1601050700000000000000000000000000000000000000
                    IE: Unknown: 3E0100
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (2) : CCMP TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00
                    IE: Unknown: 7F0101
                    IE: Unknown: DD07000C4307000000
                    IE: Unknown: 0706474220010D10
                    IE: Unknown: DD1E00904C33EE1117FFFF0000010000000000000000000000000C0000000000
                    IE: Unknown: DD1A00904C3401050700000000000000000000000000000000000000
                    IE: Unknown: DD050050F20500
                    IE: Unknown: DD750050F204104A00011010440001011041000100103B0001031047001072D54CF57F3957D8B38000265AA99AA010210006442D4C696E6B102300074449522D363135102400074449522D3631351042000830303030303030301054000800060050F2040001101100074449522D36313510080002008E
          Cell 03 - Address: 00:26:18:03:C6:C1
                    Channel:9
                    Frequency:2.452 GHz (Channel 9)
                    Quality=23/70  Signal level=-87 dBm  
                    Encryption key:on
                    ESSID:"ca8c29"
                    Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s
                    Bit Rates:6 Mb/s; 9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s
                              36 Mb/s; 48 Mb/s; 54 Mb/s
                    Mode:Master
                    Extra:tsf=000000f41eccc188
                    Extra: Last beacon: 572ms ago
                    IE: Unknown: 0006636138633239
                    IE: Unknown: 010482848B96
                    IE: Unknown: 030109
                    IE: Unknown: 050400010000
                    IE: Unknown: 2A0104
                    IE: Unknown: 2F0104
                    IE: Unknown: 32080C1218243048606C
                    IE: Unknown: DD090010180203F0040000
                    IE: WPA Version 1
                        Group Cipher : TKIP
                        Pairwise Ciphers (1) : TKIP
                        Authentication Suites (1) : PSK
                    IE: Unknown: DD180050F2020101800003A4000027A4000042435E0062322F00

dmesg | grep ath
[   10.225401] ath9k 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[   10.225423] ath9k 0000:02:00.0: setting latency timer to 64
[   10.276760] ath: EEPROM regdomain: 0x60
[   10.276769] ath: EEPROM indicates we should expect a direct regpair map
[   10.276779] ath: Country alpha2 being used: 00
[   10.276785] ath: Regpair used: 0x60
[   10.565846] ieee80211 phy0: Selected rate control algorithm 'ath9k_rate_control'
[   10.567798] Registered led device: ath9k-phy0

I realy hope that you can help me out to get my wireless-card working with help of these commands!
Many thanks in advance!!

**praseodym** · September 24th, 2011

Which network do you wan to connect to? Hiding a network often makes problems and is not a security setting. You better broadcast the ESSID

**marcux** · September 24th, 2011

I have tried both in my hidden network and in another network with broadcast on the SSID, same problem.
There is no issue with my hidden network as I got another Ububtu machine, a Debian machine and a Meego machine running in that network perfectly fine, no issues at all.